NOWJ1@ALQAC 2023: Enhancing Legal Task Performance with Classic Statistical Models and Pre-trained Language Models. - Tan-Minh Nguyen; Xuan-Hoa Nguyen; Ngoc-Duy Mai; Minh-Quan Hoang; Van-Huan Nguyen; Hoang-Viet Nguyen; Ha-Thanh Nguyen; Thi-Hai-Yen Vuong (CoRR, 2023)